MPD: pcm/FormatConverter.hxx Source File

MPD 0.20.15

FormatConverter.hxx
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1 /*
2 * Copyright 2003-2017 The Music Player Daemon Project
3 * http://www.musicpd.org
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #ifndef MPD_PCM_FORMAT_CONVERTER_HXX
21 #define MPD_PCM_FORMAT_CONVERTER_HXX
22
23 #include "check.h"
24 #include "SampleFormat.hxx"
25 #include "PcmBuffer.hxx"
26 #include "PcmDither.hxx"
27
28 #ifndef NDEBUG
29 #include <assert.h>
30 #endif
31
32 template<typename T> struct ConstBuffer;
33
37 class PcmFormatConverter {
38 SampleFormat src_format, dest_format;
39
40 PcmBuffer buffer;
41 PcmDither dither;
42
43 public:
44 #ifndef NDEBUG
45 PcmFormatConverter()
46 :src_format(SampleFormat::UNDEFINED),
47 dest_format(SampleFormat::UNDEFINED) {}
48
49 ~PcmFormatConverter() {
50 assert(src_format == SampleFormat::UNDEFINED);
51 assert(dest_format == SampleFormat::UNDEFINED);
52 }
53 #endif
54
63 void Open(SampleFormat src_format, SampleFormat dest_format);
64
68 void Close() noexcept;
69
76 gcc_pure
77 ConstBuffer<void> Convert(ConstBuffer<void> src) noexcept;
78 };
79
80 #endif
check.h
PcmFormatConverter::Convert
gcc_pure ConstBuffer< void > Convert(ConstBuffer< void > src) noexcept
Convert a block of PCM data.
PcmFormatConverter::~PcmFormatConverter
~PcmFormatConverter()
Definition: FormatConverter.hxx:49
PcmFormatConverter
A class that converts samples from one format to another.
Definition: FormatConverter.hxx:37
PcmBuffer.hxx
PcmFormatConverter::Close
void Close() noexcept
Closes the object.
PcmBuffer
Manager for a temporary buffer which grows as needed.
Definition: PcmBuffer.hxx:33
SampleFormat
SampleFormat
Definition: SampleFormat.hxx:33
SampleFormat.hxx
ConstBuffer
A reference to a memory area that is read-only.
Definition: FlacPcm.hxx:29
SampleFormat::UNDEFINED
gcc_pure
#define gcc_pure
Definition: Compiler.h:116
PcmDither
Definition: PcmDither.hxx:27
PcmDither.hxx
PcmFormatConverter::Open
void Open(SampleFormat src_format, SampleFormat dest_format)
Opens the object, prepare for Convert().
PcmFormatConverter::PcmFormatConverter
PcmFormatConverter()
Definition: FormatConverter.hxx:45